Advanced transportation system studies. Technical area 3, alternate propulsion subsystem concepts. Volume III, Program cost estimates [electronic resource] : interim final report, DRs-4,5,6 / [Daniel Levack].
Imprint
Canoga Park, Calif. : Rockwell International, Rocketdyne Division ; [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1993]
